code: def header(self):
      if self.named_as:
          return self.named_as
      key = self.key.replace("#", " ").strip()
      step = " step" if self.step else ""
      return f"{key}{step}"
  
imports: from shlex import quote
label_desc: Use image node_id 3 for calling the Scalar obj's underlying member method code with example usage: obj.header() and returns: key, step, self